Adjustable chair



FIG. 1 is a front top perspective view of an adjustable chair embodyingmy new design;

FIG. 2 is a front top perspective view of the chair with the seat tiltedforward and downward;

FIG. 3 is a right side perspective view showing the chair adjusted to analternate position for use as a combined seat and shin support;

FIG. 4 is a left side perspective view of the adjustable chair as shownin FIG. 3; and

FIG. 5 is a rear elevational view thereof.

The ornamental design for an adjustable chair, substantially as shownand described.